Concept:Vapor pressure is determined by the inherent chemical nature of a substance and its thermal state. It is strictly an intensive property, independent of mass or volume.
Formula:Not applicable.
Solution:- At any given temperature, the vapor pressure of a liquid is a fixed constant representing the equilibrium between molecules escaping into a gas and returning to the liquid.
- A single drop of water and an entire swimming pool of water (at the exact same temperature) exert the exact same vapor pressure. Therefore, the physical Amount of Liquid has zero effect on the magnitude of the vapor pressure.
Why other options are incorrect:Temperature dramatically changes vapor pressure. Intermolecular forces and molecular size physically hinder molecules from escaping, directly dictating the equilibrium vapor pressure.
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